code: def test_get_callable_name():
      assert get_callable_name(A()) == "a"
      assert get_callable_name(b) == "b"
      assert get_callable_name(lambda: True) == "<lambda>"
  
file_path: lightning-flash/tests/core/test_utils.py
imports: import os
  import pytest
  from flash.core.data.utils import download_data
  from flash.core.utilities.apply_func import get_callable_dict, get_callable_name
  from flash.core.utilities.imports import _TOPIC_CORE_AVAILABLE
label_desc: Use image node_id 2 for calling a global function with example usage: test_get_callable_name() without return types